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EC number: 201-116-6 | CAS number: 78-42-2
- Life Cycle description
- Uses advised against
- Endpoint summary
- Appearance / physical state / colour
- Melting point / freezing point
- Boiling point
- Density
- Particle size distribution (Granulometry)
- Vapour pressure
- Partition coefficient
- Water solubility
- Solubility in organic solvents / fat solubility
- Surface tension
- Flash point
- Auto flammability
- Flammability
- Explosiveness
- Oxidising properties
- Oxidation reduction potential
- Stability in organic solvents and identity of relevant degradation products
- Storage stability and reactivity towards container material
- Stability: thermal, sunlight, metals
- pH
- Dissociation constant
- Viscosity
- Additional physico-chemical information
- Additional physico-chemical properties of nanomaterials
- Nanomaterial agglomeration / aggregation
- Nanomaterial crystalline phase
- Nanomaterial crystallite and grain size
- Nanomaterial aspect ratio / shape
- Nanomaterial specific surface area
- Nanomaterial Zeta potential
- Nanomaterial surface chemistry
- Nanomaterial dustiness
- Nanomaterial porosity
- Nanomaterial pour density
- Nanomaterial photocatalytic activity
- Nanomaterial radical formation potential
- Nanomaterial catalytic activity
- Endpoint summary
- Stability
- Biodegradation
- Bioaccumulation
- Transport and distribution
- Environmental data
- Additional information on environmental fate and behaviour
- Ecotoxicological Summary
- Aquatic toxicity
- Endpoint summary
- Short-term toxicity to fish
- Long-term toxicity to fish
- Short-term toxicity to aquatic invertebrates
- Long-term toxicity to aquatic invertebrates
- Toxicity to aquatic algae and cyanobacteria
- Toxicity to aquatic plants other than algae
- Toxicity to microorganisms
- Endocrine disrupter testing in aquatic vertebrates – in vivo
- Toxicity to other aquatic organisms
- Sediment toxicity
- Terrestrial toxicity
- Biological effects monitoring
- Biotransformation and kinetics
- Additional ecotoxological information
- Toxicological Summary
- Toxicokinetics, metabolism and distribution
- Acute Toxicity
- Irritation / corrosion
- Sensitisation
- Repeated dose toxicity
- Genetic toxicity
- Carcinogenicity
- Toxicity to reproduction
- Specific investigations
- Exposure related observations in humans
- Toxic effects on livestock and pets
- Additional toxicological data
Biodegradation in water and sediment: simulation tests
Administrative data
- Endpoint:
- biodegradation in water and sediment: simulation tests
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Reliability:
- 3 (not reliable)
- Rationale for reliability incl. deficiencies:
- other: Non-standard, non-guideline method, limited experimental data reported.
Data source
Reference
- Reference Type:
- publication
- Title:
- Degradation of organophosphoric esters in leachate from a sea-based solid waste disposal site
- Author:
- Kawagoshi Y, Nakamura S, Fukunaga I
- Year:
- 2 002
- Bibliographic source:
- Chemosphere, 2002, 48, 219-225
Materials and methods
Test guideline
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- Degradation of organophosphate esters in leachate obtained from a waste-disposal site. Water and sediment were collected from "oxidation" and aeration treatment ponds. Each substance was tested in 7.5 L of water or water/sediment (600 g wwt). Control-series: autoclave-sterilised purified water (Run1), oxidation pond water (Run2), and oxidation pond water & sediment (Run3). Test bottles: oxidation pond water (Run4), and oxidation pond water & sediment (Run5), aeration pond water (Run6), aeration pond water and sediment (Run7). Degradation was followed for 80 days by GC.
- GLP compliance:
- no
Test material
- Reference substance name:
- Tris(2-ethylhexyl) phosphate
- EC Number:
- 201-116-6
- EC Name:
- Tris(2-ethylhexyl) phosphate
- Cas Number:
- 78-42-2
- Molecular formula:
- C24H51O4P
- IUPAC Name:
- tris(2-ethylhexyl) phosphate
- Test material form:
- not specified
- Details on test material:
- - Name of test material (as cited in study report): tris-2-ethylhexyl phosphate (TEHP)
- 0.75 mg dissolved in acetone and added to each test bottle (target nominal concentration 0.1 mg/L)
Constituent 1
- Radiolabelling:
- no
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- other: presumably adapted pond water or water-sediment from waste-disposal site
- Details on source and properties of surface water:
- - Details on collection (e.g. location, sampling depth, contamination history, procedure): Water and sediment from an oxidation pond and aeration pond at a waste disposal. The aeration pond had 6 mechanical aerators. The site was a sea-based landfill operation. The report refers to the collected water as leachate.
- Temperature (°C) at time of collection: Oxidation: 20 °C, Aeration: 20 °C
- pH at time of collection: Oxidation: 8.1, Aeration: 7.6
- Oxygen concentration (mg/L) initial/final: Oxidation: 3.2, Aeration: 5.5
- Dissolved organic carbon (mg/L): Oxidation: 36, Aeration: 37
- Colour: yellow-green - Details on source and properties of sediment:
- - Details on collection (e.g. location, sampling depth, contamination history, procedure): Collected with water samples from oxidation and aeration ponds.
- Duration of test (contact time):
- 80 d
Initial test substance concentration
- Initial conc.:
- 0.1 mg/L
- Based on:
- test mat.
- Parameter followed for biodegradation estimation:
- test mat. analysis
- Details on study design:
- TEST CONDITIONS
- Volume of test solution/treatment: 7.5 L
- Solubilising agent (type and concentration if used): acetone
- Test temperature: 23-26 °C
- pH: 7.4 - 8.5
- Aeration of dilution water: Run 6&7
- Suspended solids concentration: <10 mg/L
- Continuous darkness: no
TEST SYSTEM
- Number of cultures/concentration: 1
- Method used to create aerobic conditions: Run 6&7 mechanically aerated at 5 L/min
- Method used to create anaerobic conditions:
SAMPLING
- Sampling frequency: variable
CONTROL AND BLANK SYSTEM
- Inoculum blank: purified water (Run 1)
- Abiotic sterile control: oxidation pond water (Run 2) and water/sediment (Run 3)
Reference substance
- Reference substance:
- other: None
Results and discussion
% Degradationopen allclose all
- % Degr.:
- 30
- Parameter:
- test mat. analysis
- Sampling time:
- 80 d
- Remarks on result:
- other: Control Run 1, sterilised purified water
- % Degr.:
- 60
- Parameter:
- test mat. analysis
- Sampling time:
- 80 d
- Remarks on result:
- other: Control Run 2, sterilised oxidation pond water
- % Degr.:
- 100
- Parameter:
- test mat. analysis
- Sampling time:
- 80 d
- Remarks on result:
- other: Control Run 3, sterilised oxidation pond water/sediment
- % Degr.:
- 100
- Parameter:
- test mat. analysis
- Sampling time:
- 40 d
- Remarks on result:
- other: Run 4; detection limit reached
- % Degr.:
- 100
- Parameter:
- test mat. analysis
- Sampling time:
- 40 d
- Remarks on result:
- other: Run 5; detection limit reached
- % Degr.:
- 100
- Parameter:
- test mat. analysis
- Sampling time:
- 40 d
- Remarks on result:
- other: Run 6; detection limit reached
- % Degr.:
- 100
- Parameter:
- test mat. analysis
- Sampling time:
- 40 d
- Remarks on result:
- other: Run 7; detection limit reached
- Transformation products:
- not measured
Any other information on results incl. tables
Approximately 80% loss reached between 10-15 days for runs 4 -7, and 0-40% for controls over the same period. [Figure 4 of report]
The decrease in the control Runs 2&3 could have been caused by chemical reaction with compounds present in the leachate. The cause of the slow decrease in Run 1 is not known. The rate of decrease in TEHP concentration for Runs 4 -7 was higher, suggesting an additional contribution from biodegradation, but this cannot be confirmed from this experiment.
Applicant's summary and conclusion
Validity criteria
- Validity criteria fulfilled:
- no
- Remarks:
- Not conducted to a guideline method
- Conclusions:
- Primary biodegradation is possible, but cannot be confirmed by this experiment.
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